Bank robbery in small town ends with one of the robbers being wounded. The loot from the robbery is just a asset for the even more spectacular heist. Simon, gang leader and Paris night club owner, must also deal with police comissaire Edouard Colemane, who happens to be his good friend.

Diego is one of the chief of the spanish Communist Party. He is travelling back to Paris (where he lives) from a mission in Madrid. He is arrested at the border for an identity check but manages to go free thanks to Nadine, the daughter of the man whose passport is used by him. When he arrives in Paris, he starts searching one of his comrades, Juan, to prevent him from going to Madrid where he could be arrested by Franco's police...

France, 1942, during the occupation. Philippe Gerbier, a civil engineer, is one of the French Resistance's chiefs. Given away by a traitor, he is interned in a camp. He manages to escape, and joins his network at Marseilles, where he makes the traitor be executed... This non-spectacular movie (do not expect any Rambo or Robin Hood) shows us rigorously and austerely the everyday of the French Resistants : their solitude, their fears, their relationships, the arrests, the forwarding of orders and their carrying out... Both writer Joseph Kessel and co-writer and director Jean-Pierre Melville belonged to this "Army in the Shadows".